Vacuum lines

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May 18, 2017 | 05:23 PM

Twonky

Thread Starter

Mountain Pass

Joined: Feb 2017

Posts: 125

Likes: 10

From: Chicago

Vacuum lines

Does anyone know the sizes for the vacuum lines that run to the hubs and are they the same diameter throughout the vacuum system?

May 18, 2017 | 07:43 PM

Toreador_Diesel

FTE Leadership Emeritus

Joined: Sep 2003

Posts: 12,253

Likes: 763

From: Houston, Texas

I can't say that I remember, but from what I do, I know I got rid of the lines that would dry rot and fail and got some fuel line from O'reilly. Again, I don't remember what size it was, but it was a nice snug fit from the plastic fitting down to the hubs. Sorry I couldn't be of more help

May 18, 2017 | 09:01 PM

ArmyLifer

Fleet Mechanic

Joined: Mar 2017

Posts: 1,365

Likes: 179

From: Phenix City, AL

From what I've been able to find it is 3/16" ID. I ordered some off eBay and will install soon. Need at least 2' per side "they" say.

May 18, 2017 | 10:44 PM

Nicmike

Veteran/Sheepdog

Joined: Feb 2012

Posts: 6,047

Likes: 110

From: Western AR

It is 1/8" ID. Here is what you need in the color of your choice. This stuff holds up very good over time:

Amazon

Yes, the whole system is 1/8" ID. Including the stuff under the dash.

May 19, 2017 | 05:21 AM

ArmyLifer

Fleet Mechanic

Joined: Mar 2017

Posts: 1,365

Likes: 179

From: Phenix City, AL

Quote:

Originally Posted by SpringerPop

I replaced each of my wheel-well vacuum hoses with 22-1/2 inches of 3/16" (4.8mm) SAE 30R7 fuel hose each side. Secured the ends with a tie-wrap.

It should last a lot longer than OEM, and it fits perfectly.

Pop

This is from the 99-03 7.3 forum and all I had to go by. I would defer to the more experienced members here though.